Nucleic Acids Research, 1979, Vol. 7, No. 3 689-703
© 1979
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Analysis of RNA secondary structure by photochemical reversal of psoralen crosslinks
Department of Chemistry, Yale University New Haven, CT 06520, USA
Received June 27, 1979. Aminomethyltrioxsalen (AMT), a psoralen, is known to cause interstrand crosslinks in double stranded nucleic acids. We have demonstrated the photochemical reversal of this reaction, and have used this result to develop a method for identification of specific sequences which are adjacent because of RNA secondary structure formation. E. coli 5S rRNA is used as a model system. We isolated and characterized a product that is derived from the stem region of 5S RNA.
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